We are offering here the Window Hollow Section that is lightweight, structurally efficient, and often selected for its aesthetic appeal. Hollow sections are torsionally stiff, so ideal to support eccentric loads such as cladding or infill panels where twist must be controlled. The section includes at least one mounting groove for accommodating a covering rail fitting, with the mounting groove having lowered shoulders in the starting region of the groove flanks. Window Hollow Section is made available in various types and specifications as per the need.